Surveying MCQs Set-3

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1. Which one of the following is carried out by two theodolite method?

astronomical survey

geodetic survey

circular curve ranging

tachometric survey

2. Which of the following is not a method used for plane table surveying?

Traversing method

Back scattering method

Intersection method

Radiation method

3. The curves used for drawing lines between points in a contour line is

Inverted curve

Radial curve

C-curve

French curve

4. ____________________ are not mandatory in civil engineering projects like road works, dams, canals, etc.

Contour dams

Foot screws

Level vials

Contour maps

5. The error due to bad ranging is

cumulative; positive

cumulative; positive or negative

cumulative; negative

compensating

6. The difference between the most probable value of a quantity and its observed value is

residual error

weighted observation

conditional error

true error

7. A contour interval is the __________________ for all purposes.

both of these

different

same

none of these

8. In a transit theodolite, error due to eccentricity of verniers is eliminated by reading

right and left faces

both right swing and left swing

different parts of main scale

both verniers

9. An invar tape is made of an alloy of

copper and steel

nickel and steel

brass and nickel

brass and steel

10. Theory of probability is applied to

accidental errors only

cumulative errors only

none of these

both accidental and cumulative errors

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11. A triangle is said to be well conditioned if none of its angles is less than

20°

45°

60°

30°

12. The sum of the three interior angles of a triangle, the vertices of which lie on the surface of the earth, covering a vast area of several hundreds of km² is

more than 180° but not more than 270°

equal to 180°

more than 180° but not more than 225°

less than 180°

13. In case of angular measurements being more precise than the linear measurements, the traverse can be balanced by

theodolite correction

transit rule

bowditch rule

Graphical method

14. How many methods of contouring are present?

3

4

5

2

15. The gale method of traversing consists of plotting the points by

Both of these

chords

independent coordinates

consecutive coordinates

16. If the probable error in single observation is ±0.04 m and that of the mean is ±0.01 m, then the number of observations are

64

10

16

4

17. For setting out right angles, the instrument used is

optical square

abney level

alidade

ceylon ghat tracer

18. The curvature of the Earth's surface is taken into account only if the extent of survey is more than

1500 sq km

80 sq km

500 sq km

260 sq km

19. Number of links in a 30m metric chain is

200

100

150

180

20. The process of marking intermediate points on a survey line is known as

indirect ranging

ranging

none of these

direct ranging

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21. Which one of the following linear methods of setting out a circular curve needs reference of the centre of the curve?

successive bisection of arcs

offset from chord produced

radial offset

perpendicular offset

22. 'Offsets' are

short measurements from chain line

ties or check lines which are perpendicular to chain line

sets of minor instruments in chain surveying

chain lines which go out of alignment

23. Which of the following instruments is generally used for base line measurements?

invar tape

metallic tape

steel tape

chain

24. Which of the following is not true for the direct and indirect methods of contouring?

Direct method is expensive

Indirect method is less accurate but is faster

Direct method is most accurate but is slow

Indirect method is relatively more expansive

25. The instrument, which is used to measure area upon contour map is

theodolite

clinometer

planimeter

graphometer

26. Indirect methods uses how many methods?

2

4

3

6

27. The position of a point can be fixed more accurately by

optical square

cross staff

oblique offsets

perpendicular offsets

28. To observe the included angle accurately, method preferred is

reiteration

by deflection angles

double precision

repetition

29. For locating a distance object visible from two transit stations, the method usually preferred is

angle from one transit station and distance from the other one

angles and distances from transit stations

distances from two transit stations

angles from two transit stations

30. The longest chain line passing through the centre of the area is known as

tie line

base line

check line

all of these

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31. Geodetic surveying is different from plane surveying because of

undulations of the topography

the curvature of the earth

the large difference of elevations between various points

coverage of very large area

32. The main object of running a tie line is

to take details of nearby objects

to check accuracy of work

to take offsets for detailed surveying

none of these

33. Which shaped lines indicate the presence of a ridge?

V-shaped

L-shaped

S-shaped

U-shaped

34. A metallic tape is made of

invar

linen

steel

cloth and wires

35. Theodolite is an instrument used for measuring

(d) none of these

(c) both (a) and (b)

(b) vertical angle

(a) horizontal angle

36. During chaining along a straight line, the leader of the party has 4 arrows in his hand while the follower has 6. Distance of the follower from the starting point is

6 chains

4 chains

180 m

120 m

37. The line which separates the catchment basin from the rest of the area is

Ridge line

Catchment line

Dam line

Watershed line

38. Contours can be found in a _________________ map.

Political

Physical

Topographical

Thematic

39. The reference points on which a day's work is closed and from where levelling is continued the next day are called as

temporary benchmarks

permanent benchmarks

GTS benchmarks

arbitrary benchmarks

40. A contour line joins all the points having

equal vertical angles

equal elevation

zero elevation

similar reference points

Surveying MCQs Set-3

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